Red River Resources Limited (ASX: RVR) has received high-grade results from four holes at the Hillgrove Gold mine in NSW, Australia.
The planned drilling programme at Eleanora-Garibaldi has been completed and the deposit remains open; drilling at Sunlight and Cosmopolitan is continuing.
A further seven holes have been completed and are awaiting assays; results will be announced when they are received.
The high-grade intercepts within broader mineralised zones are encouraging and continue to build confidence to transition Hillgrove from a historical narrow vein project into a larger-scale gold operation.
Hillgrove has an existing JORC 2012 Mineral Resource of 7.23Mt @ 4.5 g/t Au & 1.2% Sb (1,037koz contained Au & 90kt contained Sb) and RVR continues build this resource for a larger-scale, longer life mining operation.
Eleanora-Garibaldi Drilling
Red River has received assays for drill holes ELG161 to ELG164 in its follow-up Eleanora-Garibaldi drill programme. The drill holes intercepted three parallel lodes of structurally controlled gold-antinomy dominated mineralisation. These north-south striking, near vertical lodes from west to east include the Main Lode, a southern continuation of the main Eleanora system, the Central Lode, and the East Lode. The drill holes intercepted lower grade gold mineralisation between and surrounding the dominant structures hence reporting of broad grade intervals.
The Main Lode intervals of high-grade gold and antimony mineralisation include:
• 2m @ 2.7 g/t Au and 0.9% Sb from 131.0m downhole (ELG161)
• 1m @ 2.9 g/t Au and 0.4% Sb from 58.0m down hole (ELG162)
• 1.2m @ 0.8 g/t Au and 0.2% Sb from 39.0m down hole (ELG163)
• 3.5m @ 2.8 g/t Au and 1.0% Sb from 33.5m down hole (ELG164)
The Central Lode intervals of high-grade gold and antimony mineralisation include:
• 0.7m @ 6.9 g/t Au and 7.0% Sb from 29.0m downhole (ELG163)
• 6.5m @ 4.6 g/t Au and 1.9% Sb from 24.5m down hole (ELG164)
The East Lode intervals of high-grade gold and antimony mineralisation include;
• 1m @ 3.6 g/t Au from 56m downhole (ELG161)
• 2m @ 3.5 g/t Au and 0.5% Sb from 14.0m downhole (ELG163) In hole ELG164 the merging of the Main and Central lodes forms a total high grade mineralised zone of
• 14.5m @ 3.0 g/t Au and 1.1% Sb from 22.5m downhole (ELG164)
The southern Garibaldi area has undergone significant brittle deformation both pre-mineralisation and post mineralisation compared to the northern Eleanora area. This has had two fundamental impacts on the geology and mineralisation:
The first is that the pre-mineralisation faulting has created pathways for significant lamprophyre dyke swarms, with holes drilled in this programme containing anywhere from 1 to 11 lamprophyre intrusions.
The second is that faulting has also created additional pathways for the mineralised hydrothermal fluids to flow through. This has affected the mineralisation by creating the additional and generally weaker parallel trends of mineralisation east of the main lode trend.
There also exists weak mineralisation between the lodes creating wide zones (>20m) of halo gold mineralisation. Historically, Garibaldi had a small open pit which is approximately 155m long, 40m wide and 10m deep to take advantage of the multiple gold lodes and bulk low-grade material.
Red River is waiting on results from one additional hole at Eleanora-Garibaldi. The deposit remains open along strike and at depth. RVR will schedule more drilling here following review and the testing of other potential targets throughout the Hillgrove Project.
Currently two diamond drill rigs continue to target the Sunlight Mineral Resource area and the Cosmopolitan Prospect. Results from the final Eleanora-Garibaldi hole, two holes drilled at the historic Freehold Mine area and five holes drilled at the current Sunlight Mineral Resource area are expected during the March 2022 quarter.
Hillgrove Underground Restart Update
Red River continues to work towards the restart of underground mining at Hillgrove’s Syndicate deposit, negotiations are progressing with potential mining partners.
Modifications of the antimony processing circuit are complete and ready to commission, and discussions with potential offtake partners is advancing.
For further information please visit: http://www.redriverresources.com.au/
